Kylemanna/docker-openvpn helper script

start.sh

#!/bin/bash

#################################
## Boostrap and Initial parameters
#################################
# Require realpath
type realpath;
if [ $? -eq 1 ]; then
    echo "realpath command not found, wait for install"
    sudo apt-get update && sudo apt-get install realpath -y;
fi

#################################
## Configurations
#################################
SCRIPT_PATH=$(dirname $(realpath -s $0))
OVPN_DATA=dockers_ovpndata_1
OVPN_SERVICE=dockers_ovpnserv_1
DOCKER=/usr/bin/docker
OVPN_IMAGE=kylemanna/openvpn

#################################
## Functions
#################################
function available_command {
    echo "Available Command is"
    echo "1) start_data_container"
    echo "2) initialize_configurations"
    echo "3) start_vpn"
    echo "4) generate_client_cert"
    echo "5) retrieve_client_cert"
    echo "6) clean"
}

function start_data_container {
    ${DOCKER} run -d --name ${OVPN_DATA} -v /etc/openvpn busybox tail -f /dev/null
}

function initialize_configurations {
    if [ -z ${1} ]; then
        echo "Require parameter {2} tobe hostname or ipaddress"
        exit;
    fi
    HOST_NAME=${1}
    ${DOCKER} run --volumes-from ${OVPN_DATA} --rm ${OVPN_IMAGE} ovpn_genconfig -u udp://${HOST_NAME}
    ${DOCKER} run --volumes-from ${OVPN_DATA} --rm -it ${OVPN_IMAGE} ovpn_initpki
}

function start_vpn {
    ${DOCKER} run --name ${OVPN_SERVICE} --volumes-from ${OVPN_DATA} -d -p 1194:1194/udp --privileged --cap-add=NET_ADMIN ${OVPN_IMAGE}
}

function generate_client_cert {
    if [ -z ${1} ]; then
        echo "Require parameter {2} tobe CLIENT_NAME"
        exit;
    fi
    CLIENT_NAME=${1}
    ${DOCKER} run --volumes-from ${OVPN_DATA} --rm -it ${OVPN_IMAGE} easyrsa build-client-full ${CLIENT_NAME} nopass
}

function retrieve_client_cert {
    if [ -z ${1} ]; then
        echo "Require parameter {2} tobe CLIENT_NAME"
        exit;
    fi
    if [ ! -d ${SCRIPT_PATH}/files ]; then
        mkdir ${SCRIPT_PATH}/files
    fi
    CLIENT_NAME=${1}
    ${DOCKER} run --volumes-from ${OVPN_DATA} --rm ${OVPN_IMAGE} ovpn_getclient ${CLIENT_NAME} > ${SCRIPT_PATH}/files/${CLIENT_NAME}.ovpn
}

function clean {
    ${DOCKER} ps -a | grep Exit | cut -d ' ' -f 1 | xargs ${DOCKER} rm
}

#################################
## Argument
#################################
ARG=${1}

#################################
## Start commands
#################################
case ${ARG} in
    "start_data_container"|"1")
        start_data_container
        ;;
    "initialize_configurations"|"2")
        initialize_configurations ${2}
        ;;
    "start_vpn"|"3")
        start_vpn
        ;;
    "generate_client_cert"|"4")
        generate_client_cert ${2}
        ;;
    "retrieve_client_cert"|"5")
        retrieve_client_cert ${2}
        ;;
    "clean"|"6")
        clean
        ;;
     *)
        available_command
        ;;
esac